1
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A Combined in Silico and Structural Study Opens New Perspectives on Aliphatic Sulfonamides, a Still Poorly Investigated Class of CA Inhibitors. BIOLOGY 2023; 12:biology12020281. [PMID: 36829558 PMCID: PMC9953064 DOI: 10.3390/biology12020281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/03/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023]
Abstract
Aliphatic sulfonamides are an interesting class of carbonic anhydrase inhibitors (CAIs) proven to be effective for several carbonic anhydrase (CA) isoforms involved in pathologic states. Here we report the crystallographic structures of hCA II in complex with two aliphatic sulfonamides incorporating coumarin rings, which showed a good inhibition and selectivity for this isoform. Although these two molecules have a very similar chemical structure, differing only in the substitution of the two aliphatic hydrogen atoms with two fluorine atoms, they adopt a significantly different binding mode within the enzyme active site. Theoretical binding free energy calculations, performed to rationalize these data, showed that a delicate balance of electrostatic and steric effects modulate the protein-ligand interactions. Data presented here can be fruitfully used for the rational design of novel and effective isozyme-specific inhibitor molecules.
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2
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van den Boom AJ, Zuilhof H. Sulfur-Phenolate Exchange as a Mild, Fast, and High-Yielding Method toward the Synthesis of Sulfonamides. Org Lett 2023; 25:788-793. [PMID: 36720015 PMCID: PMC9926510 DOI: 10.1021/acs.orglett.2c04292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Sulfonamides have many important biological applications, yet their synthesis often involves long reaction times under dry and non-ambient conditions. Here we report the synthesis of a large range of sulfonamides at room temperature using 4-nitrophenyl benzylsulfonate as a starting material. Sulfonamides were prepared from a wide range of aliphatic, linear, and cyclic amines, anilines, and N-methylanilines. The yields and reaction times observed here were comparable to or better than those reported previously, establishing sulfur-phenolate exchange as a viable alternative.
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Affiliation(s)
- Alyssa
F. J. van den Boom
- Laboratory
of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Han Zuilhof
- Laboratory
of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands,School
of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Tianjin 300072, China,
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3
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Sang D, Dong B, Liu Y, Tian J. Chemoselective Cleavage of Acylsulfonamides and Sulfonamides by Aluminum Halides. J Org Chem 2022; 87:3586-3595. [PMID: 35157468 DOI: 10.1021/acs.joc.1c03133] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The chemoselective cleavage of C-N bonds of amides, sulfonamides, and acylsulfonamides by aluminum halides is described. AlCl3 and AlI3 display complementary reactivities toward N-alkyl and N-acyl moieties. N-Alkylacylsulfonamides, secondary N-(tert-butyl)sulfonamides, and tertiary N-(tert-butyl)amides undergo N-dealkylation upon treatments with AlI3 generated in situ from aluminum and iodine in acetonitrile. In contrast, AlCl3 preferentially cleaves N-acyl groups of tertiary and secondary sulfonamides.
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Affiliation(s)
- Dayong Sang
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Bingqian Dong
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China.,School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, Hubei 430205, P. R. China
| | - Yunfeng Liu
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Juan Tian
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
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4
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Bhattacharya A, Shukla PM, Maji B. Highly Selective and Catalytic C-N Bond Cleavage of Tertiary Sulfonamides: Scope and Mechanistic Insight. ACS OMEGA 2021; 6:18988-19005. [PMID: 34337238 PMCID: PMC8320137 DOI: 10.1021/acsomega.1c02276] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 07/06/2021] [Indexed: 06/13/2023]
Abstract
A highly chemoselective C-N bond cleavage reaction of p-methoxybenzyl- (PMB), 3,4-dimethoxybenzyl- (DMB), or cinnamyl-substituted tertiary sulfonamides in the presence of catalytic Bi(OTf)3 is presented. A wide range of sulfonamide substrates smoothly furnished the corresponding C-N bond cleavage products in good to excellent yields. Great efforts have been made to obtain insights into the reaction mechanism based on a series of control experiments and mass spectroscopy.
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5
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Soley J, Taylor SD. Synthesis of β-Hydroxy-α,α-difluorosulfonamides from Carbanions of Difluoromethanesulfonamides. J Org Chem 2021; 86:6577-6591. [PMID: 33847499 DOI: 10.1021/acs.joc.1c00378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of β-hydroxy-α,α-difluorosulfonamides was achieved by reacting difluoromethanesulfonamides with KHMDS in the presence of an aldehyde or ketone. The reaction exhibited a dramatic counterion effect with KHMDS or NaHMDS usually giving excellent yields in minutes, while lithium bases gave little or no product. Excellent yields and high diastereomeric ratios were achieved with Nα-benzyl-Nα-phenylfluorenyl (PhF)-protected chiral amino aldehydes derived from amino acids. Following deprotection, a β-hydroxy-α,α-sulfonamide reacted under peptide coupling and Mitsunobu conditions to furnish a peptidomimetic in an excellent overall yield.
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Affiliation(s)
- Jacob Soley
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Scott D Taylor
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
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6
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Liu P, Yang J, Ai Y, Hao S, Chen X, Li F. Recyclable covalent triazine framework-supported iridium catalyst for the N-methylation of amines with methanol in the presence of carbonate. J Catal 2021. [DOI: 10.1016/j.jcat.2021.02.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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7
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Liu P, Tung NT, Xu X, Yang J, Li F. N-Methylation of Amines with Methanol in the Presence of Carbonate Salt Catalyzed by a Metal-Ligand Bifunctional Ruthenium Catalyst [( p-cymene)Ru(2,2'-bpyO)(H 2O)]. J Org Chem 2021; 86:2621-2631. [PMID: 33502847 DOI: 10.1021/acs.joc.0c02685] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A ruthenium complex [(p-cymene)Ru(2,2'-bpyO)(H2O)] was found to be a general and efficient catalyst for the N-methylation of amines with methanol in the presence of carbonate salt. Moreover, a series of sensitive substituents, such as nitro, ester, cyano, and vinyl groups, were tolerated under present conditions. It was confirmed that OH units in the ligand are crucial for the catalytic activity. Notably, this research exhibited the potential of metal-ligand bifunctional ruthenium catalysts for the hydrogen autotransfer process.
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Affiliation(s)
- Peng Liu
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People's Republic of China
| | - Nguyen Thanh Tung
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People's Republic of China
| | - Xiangchao Xu
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People's Republic of China
| | - Jiazhi Yang
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People's Republic of China
| | - Feng Li
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People's Republic of China
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8
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Meng C, Liu P, Tung NT, Han X, Li F. N-Methylation of Amines with Methanol in Aqueous Solution Catalyzed by a Water-Soluble Metal–Ligand Bifunctional Dinuclear Iridium Catalyst. J Org Chem 2020; 85:5815-5824. [PMID: 32237717 DOI: 10.1021/acs.joc.9b03411] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Chong Meng
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People’s Republic of China
| | - Peng Liu
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People’s Republic of China
| | - Nguyen Thanh Tung
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People’s Republic of China
| | - Xingyou Han
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People’s Republic of China
| | - Feng Li
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People’s Republic of China
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, People’s Republic of China
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9
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Synthesis of bromodifluoromethyl(arylsulfonyl) compounds and microwave-assisted nickel catalyzed cross coupling with arylboronic acids. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.10.085] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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10
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Zhao Y, Shadrick WR, Wallace MJ, Wu Y, Griffith EC, Qi J, Yun MK, White SW, Lee RE. Pterin-sulfa conjugates as dihydropteroate synthase inhibitors and antibacterial agents. Bioorg Med Chem Lett 2016; 26:3950-4. [PMID: 27423480 DOI: 10.1016/j.bmcl.2016.07.006] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 06/29/2016] [Accepted: 07/02/2016] [Indexed: 01/28/2023]
Abstract
The sulfonamide class of antibiotics has been in continuous use for over 70years. They are thought to act by directly inhibiting dihydropteroate synthase (DHPS), and also acting as prodrugs that sequester pterin pools by forming dead end pterin-sulfonamide conjugates. In this study, eight pterin-sulfonamide conjugates were synthesized using a novel synthetic strategy and their biochemical and microbiological properties were investigated. The conjugates were shown to competitively inhibit DHPS, and inhibition was enhanced by the presence of pyrophosphate that is crucial to catalysis and is known to promote an ordering of the DHPS active site. The co-crystal structure of Yersinia pestis DHPS bound to one of the more potent conjugates revealed a mode of binding that is similar to that of the enzymatic product analog pteroic acid. The antimicrobial activities of the pterin-sulfonamide conjugates were measured against Escherichia coli in the presence and absence of folate precursors and dependent metabolites. These results show that the conjugates have appreciable antibacterial activity and act by an on target, anti-folate pathway mechanism rather than as simple dead end products.
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Affiliation(s)
- Ying Zhao
- Department of Chemical Biology and Therapeutics, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 1000, Memphis, TN 38105, United States
| | - William R Shadrick
- Department of Chemical Biology and Therapeutics, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 1000, Memphis, TN 38105, United States
| | - Miranda J Wallace
- Department of Chemical Biology and Therapeutics, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 1000, Memphis, TN 38105, United States
| | - Yinan Wu
- Department of Structural Biology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 311, Memphis, TN 38105, United States; Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN 38163, United States
| | - Elizabeth C Griffith
- Department of Structural Biology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 311, Memphis, TN 38105, United States
| | - Jianjun Qi
- Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, Memphis, TN 38163, United States
| | - Mi-Kyung Yun
- Department of Structural Biology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 311, Memphis, TN 38105, United States
| | - Stephen W White
- Department of Structural Biology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 311, Memphis, TN 38105, United States; Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN 38163, United States
| | - Richard E Lee
- Department of Chemical Biology and Therapeutics, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 1000, Memphis, TN 38105, United States; Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, Memphis, TN 38163, United States
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11
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Xie SS, Lan JS, Wang X, Wang ZM, Jiang N, Li F, Wu JJ, Wang J, Kong LY. Design, synthesis and biological evaluation of novel donepezil–coumarin hybrids as multi-target agents for the treatment of Alzheimer’s disease. Bioorg Med Chem 2016; 24:1528-39. [DOI: 10.1016/j.bmc.2016.02.023] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 02/17/2016] [Accepted: 02/18/2016] [Indexed: 12/30/2022]
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12
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Potent, orally available, selective COX-2 inhibitors based on 2-imidazoline core. Eur J Med Chem 2014; 84:160-72. [DOI: 10.1016/j.ejmech.2014.07.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 07/05/2014] [Accepted: 07/07/2014] [Indexed: 11/22/2022]
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13
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Tan BYH, Teo YC, Seow AH. Low Catalyst Loadings for Ligand-Free Copper(I)-Oxide-CatalyzedN-Arylation of Methanesulfonamide in Water. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301561] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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14
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Prakash GKS, Ni C, Wang F, Zhang Z, Haiges R, Olah GA. Difluoro(sulfinato)methylation of N-Sulfinyl Imines Facilitated by 2-Pyridyl Sulfone: Stereoselective Synthesis of Difluorinated β-Amino Sulfonic Acids and Peptidosulfonamides. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304395] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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Prakash GKS, Ni C, Wang F, Zhang Z, Haiges R, Olah GA. Difluoro(sulfinato)methylation of N-Sulfinyl Imines Facilitated by 2-Pyridyl Sulfone: Stereoselective Synthesis of Difluorinated β-Amino Sulfonic Acids and Peptidosulfonamides. Angew Chem Int Ed Engl 2013; 52:10835-9. [DOI: 10.1002/anie.201304395] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 07/12/2013] [Indexed: 11/09/2022]
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16
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Utilization of DmbNHNH2 in the synthesis of amino-substituted 4-((3,5-diamino-1H-pyrazol-4-yl)diazenyl)phenols. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.063] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Eerland MF, Hedberg C. Design and synthesis of an Fmoc-SPPS-compatible amino acid building block mimicking the transition state of phosphohistidine phosphatase. J Org Chem 2012; 77:2047-52. [PMID: 22283371 DOI: 10.1021/jo2025702] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The synthesis of a sulfonamide-based transition-state (TS) analogue of enzymatic phosphohistidine dephosphorylation as an amino acid building block is presented, together with the proof-of-concept of its incorporation into peptides. Key features include final global acidolytic protective group removal as well as full compatibility with standard Fmoc solid-phase peptide synthesis (SPPS). The peptides are designed as inhibitors of phosphohistidine phosphatase and as a pull-down probe for identification of phosphohistidine phosphatases, respectively.
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Affiliation(s)
- Martijn F Eerland
- Department of Chemical Biology, Max Planck Institute for Molecular Physiology, Otto-Hahn Strasse 11, Dortmund D-44227, Germany
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18
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Reuillon T, Bertoli A, Griffin RJ, Miller DC, Golding BT. Efficacious N-protection of O-aryl sulfamates with 2,4-dimethoxybenzyl groups. Org Biomol Chem 2012; 10:7610-7. [DOI: 10.1039/c2ob26057c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Free radical fluoroalkylation of terminal alkenes and alkynes with iododifluoromethanesulfonamides. Sci China Chem 2011. [DOI: 10.1007/s11426-010-4139-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Shahrisa A, Zirak M, Torfeh N, Saraei M. Synthesis of Mono- and Bis-chlorosulfonylarylpyrones and Related Sulfonates and Sulfonamides. PHOSPHORUS SULFUR 2010. [DOI: 10.1080/10426507.2010.484904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Aziz Shahrisa
- a Department of Organic Chemistry, Faculty of Chemistry , University of Tabriz , Tabriz, Iran
| | - Maryam Zirak
- a Department of Organic Chemistry, Faculty of Chemistry , University of Tabriz , Tabriz, Iran
| | - Neda Torfeh
- a Department of Organic Chemistry, Faculty of Chemistry , University of Tabriz , Tabriz, Iran
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21
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Miura T, Yamauchi M, Kosaka A, Murakami M. Nickel-Catalyzed Regio- and Enantioselective Annulation Reactions of 1,2,3,4-Benzothiatriazine-1,1(2H)-dioxides with Allenes. Angew Chem Int Ed Engl 2010; 49:4955-7. [DOI: 10.1002/anie.201001918] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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22
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Miura T, Yamauchi M, Kosaka A, Murakami M. Nickel-Catalyzed Regio- and Enantioselective Annulation Reactions of 1,2,3,4-Benzothiatriazine-1,1(2H)-dioxides with Allenes. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201001918] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Fu W, Zou G, Zhu M, Hong D, Deng D, Xun C, Ji B. Stereoselective fluorination of methylenecyclopropanes with N-F reagents: A modular entry to γ-fluorohomoallylic sulfonimides and γ-fluorohomoallylic amides. J Fluor Chem 2009. [DOI: 10.1016/j.jfluchem.2009.07.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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24
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Jiang M, Shi M. Reactions of methylenecyclopropanes and vinylidenecyclopropanes with N-fluorodibenzenesulfonimide. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.04.075] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Lopez M, Drillaud N, Bornaghi LF, Poulsen SA. Synthesis of S-Glycosyl Primary Sulfonamides. J Org Chem 2009; 74:2811-6. [DOI: 10.1021/jo9000367] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marie Lopez
- Eskitis Institute, Griffith University, Brisbane, Queensland 4111, Australia
| | - Nicolas Drillaud
- Eskitis Institute, Griffith University, Brisbane, Queensland 4111, Australia
| | - Laurent F. Bornaghi
- Eskitis Institute, Griffith University, Brisbane, Queensland 4111, Australia
| | - Sally-Ann Poulsen
- Eskitis Institute, Griffith University, Brisbane, Queensland 4111, Australia
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26
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Hussain M, Ahmed V, Hill B, Ahmed Z, Taylor SD. A re-examination of the difluoromethylenesulfonic acid group as a phosphotyrosine mimic for PTP1B inhibition. Bioorg Med Chem 2008; 16:6764-77. [DOI: 10.1016/j.bmc.2008.05.062] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2008] [Revised: 05/16/2008] [Accepted: 05/28/2008] [Indexed: 01/02/2023]
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27
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Affiliation(s)
- Purakkattle Biju
- a Schering-Plough Research Institute , Kenilworth, New Jersey, USA
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28
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Zhou G, Ting P, Aslanian R, Piwinski JJ. A useful Pd-catalyzed Negishi coupling approach to benzylic sulfonamide derivatives. Org Lett 2008; 10:2517-20. [PMID: 18491861 DOI: 10.1021/ol800785g] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A mild catalytic system to access diversely functionalized benzylic sulfonamides has been developed. Palladium-catalyzed alpha-arylation by Negishi cross-coupling of sulfonamide-stabilized anions and a wide range of aryl iodides, bromides, and triflates constitutes a practical strategy for the synthesis of various benzylic sulfonamides.
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Affiliation(s)
- Gang Zhou
- Department of Medicinal Chemistry, Schering-Plough Research Institute, Kenilworth, NJ 07033, USA.
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29
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Grimm JB, Katcher MH, Witter DJ, Northrup AB. A New Strategy for the Synthesis of Benzylic Sulfonamides: Palladium-Catalyzed Arylation and Sulfonamide Metathesis. J Org Chem 2007; 72:8135-8. [PMID: 17880242 DOI: 10.1021/jo701431j] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient two-step strategy has been developed to access diversely functionalized benzylic sulfonamides. Execution of this strategy required the development of two reaction methods: the palladium-catalyzed cross-coupling of aryl halides with CH-acidic methanesulfonamides and a metathesis reaction between the resulting alpha-arylated sulfonamides and diverse amines. The broad scope of the cross-coupling process combined with a versatile sulfonamide metathesis constitutes an efficient strategy for the synthesis of various benzylic sulfonamides.
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Affiliation(s)
- Jonathan B Grimm
- Department of Drug Design and Optimization, Merck Research Laboratories, Boston, Massachusetts 02115, USA
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30
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Chen L, Gao G, Bonnac L, Wilson DJ, Bennett EM, Jayaram HN, Pankiewicz KW. Methylenebis(sulfonamide) linked nicotinamide adenine dinucleotide analogue as an inosine monophosphate dehydrogenase inhibitor. Bioorg Med Chem Lett 2007; 17:3152-5. [PMID: 17395461 DOI: 10.1016/j.bmcl.2007.03.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2007] [Accepted: 03/10/2007] [Indexed: 11/16/2022]
Abstract
A methylenebis(sulfonamide) linked NAD analogue has been designed to circumvent the metabolically unstable, ionic nature of the natural pyrophosphate linkage. This NAD analogue is assembled through two Mitsunobu reactions of a methylenebis(sulfonamide) linker with two protected nucleosides. A 2,4-dimethoxybenzyl group is used as a sulfonamide protective group, which allows facile removal under mildly acidic conditions. This NAD analogue inhibits IMPDH at low micromolar concentration.
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Affiliation(s)
- Liqiang Chen
- Center for Drug Design, University of Minnesota, Minneapolis, MN 55455, USA.
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31
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Ghosh AK, Zajc B. High-yield synthesis of fluorinated benzothiazolyl sulfones: general synthons for fluoro-julia olefinations. Org Lett 2007; 8:1553-6. [PMID: 16597108 DOI: 10.1021/ol060002+] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] General, high-yield tandem electrophilic fluorination and modified Julia olefination for the synthesis of fluoro olefins is reported. A series of alpha-fluoro 1,3-benzothiazol-2-yl sulfone-based synthons were synthesized via deprotonation-fluorination. Of critical importance for high-yield fluorinations were heterogeneous reaction conditions, as under homogeneous conditions only starting sulfones were recovered. The alpha-fluoro 1,3-benzothiazol-2-yl sulfones so obtained were subjected to condensations with a variety of aldehydes and ketones to afford high yields of regiospecifically fluorinated olefins.
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Affiliation(s)
- Arun K Ghosh
- Department of Chemistry, The City College and The City University of New York, 138th Street at Convent Avenue, New York, New York 10031, USA
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Navidpour L, Lu W, Taylor SD. Synthesis of α-Fluorosulfonate and α-Fluorosulfonamide Analogues of a Sulfated Carbohydrate. Org Lett 2006; 8:5617-20. [PMID: 17107086 DOI: 10.1021/ol062357z] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first synthesis of sulfonamide and sulfonate analogues of a sulfated carbohydrate in which the ester oxygen of the sulfate is replaced with a CHF or CF2 group is reported. This was accomplished by electrophilic fluorination of the protected sulfonate and sulfonamide precursors. [reaction: see text].
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Affiliation(s)
- Latifeh Navidpour
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3G1
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Hill B, Ahmed V, Bates D, Taylor SD. Enantioselective Synthesis of Protected l-4-[Sulfonamido(difluoromethyl)]phenylalanine and l-4-[Sulfonamido(methyl)]phenylalanine and an Examination of Hexa- and Tripeptide Platforms for Evaluating pTyr Mimics for PTP1B Inhibition. J Org Chem 2006; 71:8190-7. [PMID: 17025311 DOI: 10.1021/jo061496r] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first enantioselective syntheses of L-4-(sulfonamidomethyl)phenylalanine and L-[sulfonamido(difluoromethyl)]phenylalanine suitably protected for peptide syntheses are described. A key step in the synthesis of L-(sulfonamidomethyl)phenylalanine was an oxidative chlorination on Ac-L-Phe(4-CH2SCOCH3)-OEt to give crude Ac-L-Phe(4-CH2SO2Cl)-OEt, which could be reacted with amines to give the corresponding sulfonamides. Key to the preparation of L-[sulfonamido(difluoromethyl)]phenylalanine was a highly enantioselective reaction involving William's auxiliary and a benzylic bromide intermediate. These amino acids were incorporated into two peptide sequences, DADE-X-LNH2 and FmocGlu(OBn)-X-LNH2, which have previously been employed as platforms for assessing pTyr mimics for inhibition of protein tyrosine phosphatase 1B (PTP1B). Inhibition studies with these and other peptides and PTP1B revealed that good inhibition could be obtained using the tripeptide platform, although the presence of a pTyr mimic was not required for good inhibition. These results suggest that the FmocGlu(OBn)-X-LNH2 tripeptide platform is not suitable for assessing pTyr mimics for PTP1B inhibition.
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Affiliation(s)
- Bryan Hill
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3G1
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Sadeghi MM, Loghmani-Khouzani H, Ranjbar-Karimi R, Butler P, Golding BT. Sonochemical fluorination of heterocyclic nitro compounds with Selectfluor. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.03.144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Sadeghi MM, Loghmani-Khouzani H, Ranjbar-Karimi R, Golding BT. Sonochemical fluorination of heterocyclic nitro compounds with Selectfluor™ (F-TEDA-BF4). Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.01.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Cecchi A, Taylor SD, Liu Y, Hill B, Vullo D, Scozzafava A, Supuran CT. Carbonic anhydrase inhibitors: Inhibition of the human isozymes I, II, VA, and IX with a library of substituted difluoromethanesulfonamides. Bioorg Med Chem Lett 2005; 15:5192-6. [PMID: 16203142 DOI: 10.1016/j.bmcl.2005.08.102] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2005] [Revised: 08/05/2005] [Accepted: 08/22/2005] [Indexed: 11/22/2022]
Abstract
An inhibition study of the human cytosolic isozymes I, and II, the mitochondrial isoform VA, and the tumor-associated, transmembrane isozyme IX of carbonic anhydrase (CA, EC 4.2.1.1) with a library of aromatic/heteroaromatic/polycyclic difluoromethanesulfonamides is reported. Most of the inhibitors were derivatives of benzenedifluoromethanesulfonamide incorporating substituted-phenyl moieties, or were methylsulfonamide and difluoromethyl-sulfonamide derivatives of the sulfamates COUMATE and EMATE, respectively. Except for the methylsulfonamide-COUMATE derivative which behaved as a potent CA II inhibitor (K(I) of 32nM), these sulfonamides were moderate inhibitors of all isozymes, with inhibition constants in the range of 96-5200nM against hCA I, of 80-670nM against hCA II, and of 195-9280nM against hCA IX, respectively. Remarkably, some derivatives, such as 3-bromophenyl-difluoromethanesulfonamide, showed a trend to selectively inhibit the mitochondrial isoform CA VA, showing selectivity ratios for inhibiting CA VA over CA II of 3.53; over CA I of 6.84 and over CA IX of 9.34, respectively, although it is a moderate inhibitor (K(I) of 160nM). Some of these derivatives may be considered as leads for the design of isozyme selective CA inhibitors targeting the mitochondrial isozyme CA VA, with potential use as anti-obesity agents.
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Affiliation(s)
- Alessandro Cecchi
- Università degli Studi di Firenze, Polo Scientifico, Laboratorio di Chimica Bioinorganica, Rm. 188, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy
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Liu Y, Ahmed V, Hill B, Taylor SD. Synthesis of a non-hydrolyzable estrone sulfate analogue bearing the difluoromethanesulfonamide group and its evaluation as a steroid sulfatase inhibitor. Org Biomol Chem 2005; 3:3329-35. [PMID: 16132094 DOI: 10.1039/b508852f] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Steroid sulfatase (STS) catalyzes the hydrolyis of steroidal sulfates such as estrone sulfate (ES1) and is considered to be an attractive target in the treatment of steroid dependent cancers. A non-hydrolyzable estrone sulfate (ES1) analogue bearing an alpha,alpha-difluorosulfonamide moiety at the 3-position on the A-ring, compound , was synthesized. Key to the success of this synthesis was the first use of the allyl group as a sulfonamide protecting group. The pK(a) of this ES1 mimic in 0.1 M bis-tris propane, 10% DMSO was determined to be 8.05 using 19F NMR. Compound is a reversible inhibitor with a K(i) similar to that of its sulfonate analogue at pH 7.0. It is more potent than its non-fluorinated sulfonamide analogue and, its inhibitory potency increases with increasing pH, a trend opposite to that of other STS inhibitors. Possible reasons for this are presented.
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Affiliation(s)
- Yong Liu
- Dept. of Chemistry, University of Waterloo, 200 University Ave. West, Waterloo, Ontario, CanadaN2L 3G1
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Blackburn GM, Türkmen H. Synthesis of α-fluoro- and α,α-difluoro-benzenemethanesulfonamides: new inhibitors of carbonic anhydrase. Org Biomol Chem 2005; 3:225-6. [PMID: 15632963 DOI: 10.1039/b417327a] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Direct fluorination of arenemethanesulfonamide anions under mild conditions and in high yield has been accomplished using N-fluorobisbenzenesulfonimide, NFSi, on carbanions of N-tert-butyl- and N-bis-(4-methoxyphenyl-methyl)-benzenemethanesulfonamides giving novel alpha-fluoro- and alpha,alpha-difluoro-benzenemethanesulfonamides respectively: IC(50) and pK(a) data show that alpha-halogenation enhances sulfonamide acidity incrementally and correlates well with increased carbonic anhydrase inhibition, while lipophilicity is also enhanced.
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Affiliation(s)
- G Michael Blackburn
- University of Sheffield, Department of Chemistry, Sheffield, S3 7HF, England.
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Boyle NA, Chegwidden WR, Blackburn GM. A new synthesis of difluoromethanesulfonamides–a novel pharmacophore for carbonic anhydrase inhibition. Org Biomol Chem 2005; 3:222-4. [PMID: 15632962 DOI: 10.1039/b416642f] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Preparation of the key intermediate carboxydifluoromethanesulfonamide provides direct synthetic access to a wide range of novel difluoromethanesulfonamides, including the acetazolamide analogue (2-ethanoylamino-1,3,4-thiadiazol-5-yl)-difluoromethanesulfonamide. Their water solubility and stability, ether partition coefficient, pK(a) and submicromolar dissociation constants for human carbonic anhydrase isozyme II (HCA II) make them promising candidates for topical glaucoma therapy.
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Affiliation(s)
- Nicholas A Boyle
- Krebs Institute, Chemistry Department, Sheffield University, Sheffield, UK S3 7HF
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